My mother is the kindest person in the world .

我的母亲是世界上最善良的人。

It 's the kindest thing we can do .

这已经是最仁慈的办法了。

Please convey my kindest regards to your sister .

请转达我对你的姐姐最亲切问候。

He was the kindest man I ever knew .

他是我认识的最好的人。

Over the years , I have decided he is one of the wisest and kindest men I 've met .

这些年，我一直认为他是我所遇到的最智慧的、最和善的那一类人。